The 85% Clause in a Commercial Contract: Can a Solo NP Cut It?

Is the 85% clause a rule the plan has to follow?

No. The 85 percent in your contract is a number the plan wrote into an exhibit, and an exhibit is a document both signatures sit under. The federal 85 percent it resembles is a Medicare payment rule: 42 CFR 414.56 says allowed amounts for a nurse practitioner's services, other than assistant-at-surgery services, may not exceed 85 percent of the physician fee schedule amount 1Ref 1Office of the Federal Register (2026).42 CFR 414.56 — Payment for nurse practitioners' and clinical nurse specialists' services.The Medicare ceiling itself: allowed amounts for a nurse practitioner's services may not exceed 85 percent of the physician fee schedule amount, and the scope of that rule as a Medicare payment regulation rather than a commercial-rate requirement.. That regulation binds Medicare. It does not set a commercial plan's rate.

The operative words are a ceiling. Under Medicare, an NP's allowed amounts may not exceed 85 percent of the physician fee schedule amount for the service 1Ref 1Office of the Federal Register (2026).42 CFR 414.56 — Payment for nurse practitioners' and clinical nurse specialists' services.The Medicare ceiling itself: allowed amounts for a nurse practitioner's services may not exceed 85 percent of the physician fee schedule amount, and the scope of that rule as a Medicare payment regulation rather than a commercial-rate requirement.. A commercial plan that copies the figure is copying a cap written for a program it does not take part in, then presenting the result as its standard professional rate.

But a standard rate is a term of a private agreement, and terms of private agreements get asked about.

Whether a specific plan will move a percentage set for a whole class of practitioners, for a single-provider practice, is a commercial decision, and no public source measures how often it happens. A common pattern is that plans hold the class rate and negotiate around it: the schedule year, the codes covered, the credentialing timeline. Treat that as convention rather than rule. The way to learn what your plan does is to ask in writing and keep what comes back.

What the federal 85% covers, and what it leaves out

The federal rule covers the allowed amount, and a flat 85 percent never arrives in the practice account. The ceiling is set on what Medicare may allow, and the 85 percent is taken from the physician fee schedule amount 1Ref 1Office of the Federal Register (2026).42 CFR 414.56 — Payment for nurse practitioners' and clinical nurse specialists' services.The Medicare ceiling itself: allowed amounts for a nurse practitioner's services may not exceed 85 percent of the physician fee schedule amount, and the scope of that rule as a Medicare payment regulation rather than a commercial-rate requirement.. Medicare then pays 80 percent of the lesser of the actual charge or 85 percent of the amount a physician gets under the fee schedule, for services furnished outside a hospital or skilled nursing facility 2Ref 2Centers for Medicare & Medicaid Services (2026).Advanced Practice Registered Nurses (APRNs).CMS's own statement of how the 85 percent is applied to an NP claim: 80 percent of the lesser of the actual charge or 85 percent of the physician fee schedule amount outside a hospital or skilled nursing facility, and the assistant-at-surgery formula of 85 percent of 16 percent..

The percentage is not uniform across services either. CMS pays a nurse practitioner directly for assistant-at-surgery services at 85 percent of 16 percent of the amount a physician gets under the fee schedule 2Ref 2Centers for Medicare & Medicaid Services (2026).Advanced Practice Registered Nurses (APRNs).CMS's own statement of how the 85 percent is applied to an NP claim: 80 percent of the lesser of the actual charge or 85 percent of the physician fee schedule amount outside a hospital or skilled nursing facility, and the assistant-at-surgery formula of 85 percent of 16 percent.. A commercial clause written as one flat percentage across an entire schedule is already simpler than the rule it borrowed from.

The Medicare 85% rule for NPs has its own arithmetic and its own exceptions, and it is worth working through once on its own terms. Inside a commercial contract it does a narrower job: it supplies a number, and it makes that number look official.

The clause, for its part, almost never names you. Under Medicare the same 85 percent ceiling applies to physician assistants for services other than assistant-at-surgery furnished beginning January 1, 1998 3Ref 3Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).42 CFR 414.52 — Payment for physician assistants' services..That the 85 percent ceiling is a practitioner-class rule reaching physician assistants on the same terms for services other than assistant-at-surgery furnished beginning January 1, 1998, which is why a contract clause naming a class is not a rating of the individual NP.. A contract line reading non-physician practitioner or advanced practice provider is copying a federal practitioner category that predates your NPI enumeration. It carries nothing about your chart notes, your outcomes or your panel size.

Does a collaborating physician raise the number?

Not under Medicare. Medicare pays a nurse practitioner for professional services only where the nurse practitioner personally performed them 4Ref 4Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).§ 410.75 Nurse practitioners' services..The personal-performance condition attaching Medicare payment to the NP's own claim, and the federal collaboration condition under which the collaborating physician need not be present or independently evaluate each patient.. The federal collaboration condition runs alongside that payment rule rather than through it: the collaborating physician does not need to be present when the services are furnished, and does not have to make an independent evaluation of each patient 4Ref 4Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).§ 410.75 Nurse practitioners' services..The personal-performance condition attaching Medicare payment to the NP's own claim, and the federal collaboration condition under which the collaborating physician need not be present or independently evaluate each patient.. A collaborative agreement or protocol answers a coverage and scope question, and it leaves the percentage where it was.

Medicare's one route to 100 percent runs through incident-to billing, and a solo NP-owned practice cannot take it. The supervising physician or other listed practitioner bills the service, and Medicare reimburses at 100 percent of the fee schedule 5Ref 5Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.Medicare's 100 percent incident-to fork and the direct-supervision and billing conditions attached to it, supporting why that route is unavailable to a solo NP-owned practice with no physician.. The condition rides with the arrangement: the service is provided under direct supervision by that physician or other listed practitioner 5Ref 5Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.Medicare's 100 percent incident-to fork and the direct-supervision and billing conditions attached to it, supporting why that route is unavailable to a solo NP-owned practice with no physician.. With no physician in the practice, nobody occupies that role, and the claim goes out under the nurse practitioner's own number at the capped amount.

But every sentence in that paragraph belongs to Medicare, and importing it into a commercial argument is the most common way this negotiation goes sideways.

Commercial incident-to rules are per-payer. Each plan writes its own terms for a service delivered by one clinician and billed under another, and the CMS conditions above have no authority over that language. Read the plan's published policy, then the contract, before assuming the route is open or closed.

The base the percentage multiplies moves every year

The percentage is half the term. Eighty-five percent of what, in which year, is the other half, and it decides more of the money than the percentage does. If the contract pins its base to the Medicare physician fee schedule, that base is rebuilt every year: CMS finalized a CY 2026 nonqualifying-APM conversion factor of $33.40, which the agency describes as a projected increase of $1.05, or 3.26 percent, from $32.35 6Ref 6Centers for Medicare & Medicaid Services (2025).Calendar Year (CY) 2026 Medicare Physician Fee Schedule Final Rule (CMS-1832-F).What CY 2026 finalized about the base the percentage multiplies: the nonqualifying-APM conversion factor of $33.40 as a projected increase of $1.05 (3.26 percent) from $32.35, and the two separate conversion factors required by statute beginning in CY 2026..

There is also no longer a single conversion factor to point at. CMS finalized a qualifying-APM conversion factor of $33.57 alongside the nonqualifying $33.40, noting that two separate conversion factors are required by statute beginning in CY 2026 6Ref 6Centers for Medicare & Medicaid Services (2025).Calendar Year (CY) 2026 Medicare Physician Fee Schedule Final Rule (CMS-1832-F).What CY 2026 finalized about the base the percentage multiplies: the nonqualifying-APM conversion factor of $33.40 as a projected increase of $1.05 (3.26 percent) from $32.35, and the two separate conversion factors required by statute beginning in CY 2026.. A contract reading 85 percent of the Medicare physician fee schedule, with nothing after it, has left two questions open: which year, and which of the two.

Some contracts do not reference Medicare at all and pay a percentage of the plan's own schedule. That schedule is usually incorporated by reference rather than attached, which makes a written request for a copy the first thing to send, ahead of any argument about the percentage.

A rate exhibit naming a year and a conversion factor can be audited twelve months later; one that names neither changes value every January with nobody signing anything.

How to read the clause in your own exhibit

Find four things before arguing about any of them: the percentage, the base schedule it multiplies, the provider class it is attached to, and the effective date and term. They sit in different documents. The percentage tends to be in a rate exhibit, the class definition in the agreement's definitions article, and the schedule itself in a document incorporated by reference that nobody sends unless it is asked for by name.

The class definition deserves the slow read. Where a plan ties a rate to a provider-type classification, the code set behind it carries no scope meaning of its own: NUCC states taxonomy codes are self-selected by the provider and define area of specialty rather than services rendered 7Ref 7National Uniform Claim Committee (NUCC) (2026).Health Care Provider Taxonomy.That taxonomy codes are self-selected and define area of specialty rather than services rendered, supporting the point that a provider-type classification on a contract exhibit carries no scope-of-licensure meaning.. The classification on your record describes the specialty you picked at enumeration, and says nothing about what you are licensed to do.

Reading a payer contract in that order, definitions before rates, is slower than opening the exhibit and looking for a number. It is also the only order in which the number means something. The same packet usually sets malpractice coverage limits for NPs and names the credentialing documents the plan will want; both are costs of the contract whether or not the rate moves.

What to ask for, and where this stops being ours to answer

Ask in writing, name the base fee schedule you want identified, and ask what would have to change for the percentage to move. A plan that will not touch a class rate will sometimes answer the second and third questions in detail, and those answers are the material for the next renewal. The decision to sign, hold or walk is yours, made with counsel who has read the whole agreement.

One precondition sits under the rate question. If the plan will not enroll you as a directly contracted practitioner, the percentage is moot, because the claims go out under somebody else's agreement. A plan refusing direct NP credentialing is a different problem with a different remedy, and it gets solved first.

Counsel earns the fee on the language around the number more than on the number itself: the incorporation-by-reference clause, the amendment provision letting a plan change a fee schedule on notice, and the termination terms. Those decide whether a rate survives the year it was signed in. None of this is legal advice, and none of it predicts what your plan will do.

Send one email this week asking for the named fee schedule the percentage multiplies, and file the answer with the contract.